Compare the acidic properties of Sio2, P2O5,So2
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Among Al2O3, SiO2, P2O3 and SO2 the correct order of acid strength is. Al2O3 is amphoteric. SiO2 is slightly acidic whereas P2O3 and SO2 are the anhydrides of the acids H3PO3 and H2SO3.
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